For a 4340 steel with om = 400 MPa , what is the largest amplitude that...

 

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For a 4340 steel with om = 400 MPa , what is the largest amplitude that guarantees no fatigue failure? 700 Ti-SAI-2.5Sn titanium alloy 600 4340 steel 500 400 1045 steel 300 Ductile cast iron 200 70Cu-30Zn brass 2014-T6 Al alloy 100 EQ21A-T6 Mg alloy 10 10 10 107 10 10° Cycles to failure, N Data taken from the folowing sources and reproduced with permission of ASM International, Materials Park, OH, 44073: ASM Handbook, Vol. I, Properties and Selection: Irons, Steels, and High-Pertormance Alloys, 1990, ASM Handbook, Vol. 2, Properties and Selection: Nonferrous Alloys and Special- Purpose Materiais, 1990; G. M. Sinclair and W. J. Craig, "Influence of Grain Size on Work Hardening and Fatigue Characteristics of Aipha Brass," Transactions of ASM, Vol. 44, 1952. Maximum stress, (MPa) For a 4340 steel with om = 400 MPa , what is the largest amplitude that guarantees no fatigue failure? 700 Ti-SAI-2.5Sn titanium alloy 600 4340 steel 500 400 1045 steel 300 Ductile cast iron 200 70Cu-30Zn brass 2014-T6 Al alloy 100 EQ21A-T6 Mg alloy 10 10 10 107 10 10° Cycles to failure, N Data taken from the folowing sources and reproduced with permission of ASM International, Materials Park, OH, 44073: ASM Handbook, Vol. I, Properties and Selection: Irons, Steels, and High-Pertormance Alloys, 1990, ASM Handbook, Vol. 2, Properties and Selection: Nonferrous Alloys and Special- Purpose Materiais, 1990; G. M. Sinclair and W. J. Craig, "Influence of Grain Size on Work Hardening and Fatigue Characteristics of Aipha Brass," Transactions of ASM, Vol. 44, 1952. Maximum stress, (MPa)